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Prospective applications for SHM on commercial aircraft

: Kapoor, H.; Boller, C.; Worden, K.; Manson, G.; Lugo, A.

Chang, F.-K.:
Structural Health Monitoring 2009. Vol.1 : From System Integration to Autonomous Systems. Proceedings of the 7th International Workshop on Structural Health Monitoring, 09.-11.09.2009, Stanford University
Lancaster, Pa.: DEStech Publications, 2009
ISBN: 978-1-60595-007-5
International Workshop on Structural Health Monitoring (IWSHM) <7, 2009, Stanford/Calif.>
Fraunhofer IZFP ()
structural health monitoring; aerospace industry

There is current agreement between aerospace industry and researchers that the drive for implementing SHM onboard aircraft should come from the need to increase availability. Scheduled inspection intervals across an aircraft's operational life are identified as potential areas to realise such benefits. However maintenance
intervals are complex and before identifying where SHM can be applied, a series of challenges arise. Firstly, maintenance tasks to be undertaken in an interval are not explicitly defined; secondly, an optimum or near-optimum map of the interval process must be established. The map should outline the sequence of jobs to be carried out but also encompass key uncertainties that are likely to exist. The initial challenge is addressed by mining through maintenance procedures and documents to generate realistic inspection phases and the second challenge is met by using optimisation methods and uncertainty principles. The paper intends to emphasise the important issues and methods that should be used to meet the challenges highlighted. A realistic commercial airliner example has been used, taking the methods outlined to establish prospective SHM areas that increase aircraft availability.